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NTIS

10/08/2007

Collation

xv, 72 p. : ill. ; 28 cm.

Abstract

In April 1995, the U.S. Environmental Protection Agency (EPA) conducted a demonstration of field portable X-ray fluorescence (FPXRF) analyzers. The primary objectives of this demonstration were (1) to determine how well FPXRF analyzers perform in comparison to standard reference methods, (2) to identify the effects of sample matrix variations on the performance of FPXRF, (3) to determine the logistical and economic resources needed to operate these analyzers, and (4) to test and validate an SW-846 draft method for FPXRF analysis. The demonstration design was subjected to extensive review and comment by the EPAs National Exposure Research Laboratory, EPA Regional and Headquarters Superfund technical staff, the EPAs Office of Solid WasteMethods Section, and the technology developers. Two sites were used for this demonstration: the RV Hopkins site and the ASARCO Tacoma Smelter site (ASARCO). RV Hopkins is an active steel drum recycling facility and a former battery recycling operation. It is located in Davenport, Iowa. The ASARCO site is a former copper and lead smelter and is located in Tacoma, Washington. The test samples analyzed during this demonstration were evenly distributed between three distinct soil textures: sand, loam, and clay. The reference methods used to evaluate the comparability of data were EPA SW-846 Methods 3050A and 6010A, Acid Digestion of Sediments, Sludges, and Soils and Inductively Coupled Plasma-Atomic Emission Spectroscopy, respectively.